How clubs recruit new managers: Data analysis, recruitment consultants or old-school word of mouth?

Tottenham Hotspur’s sporting director Johan Lange (left) and CEO Vinai Venkatesham, the men who will appoint a long-term successor to Thomas Frank
“The appointment of a manager or head coach is probably the most important decision a football club’s ownership have to make, so why are so many getting it so badly wrong? The sackings of Thomas Frank at Tottenham Hotspur and Sean Dyche at Nottingham Forest last week took the number of managerial changes at the 92 Premier League and Football League clubs this season to 31. That does not quite equate to a third of sides making a switch, given two have done it more than once — Watford have named a new manager twice since the games began in August while Dyche’s departure is the third of the campaign at Forest — but it is still a staggering tally. …”
NY Times/The Athletic – Michael Cox (Video)